Correct, I think. It might be possible to wind up the gear ratios to the point it would turn fast enough to pump enough air, but the results could be, well, messy if it failed do to centrifugal stresses.

I have got an enormous Wade roots-type supercharger off a DAF 2-stroke diesel, which would easily blow enough for a mere 4L V8, but it's HUGE!

pca
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Experience is what you get just after it would have helped...